The paper will analyze the law abiding on the Public-Private Partnership and its success in the infrastructure development by comparing it to India and other African states. It directly examines the effects of a variety of regulatory methods, including codified laws and guiding frameworks on the effectiveness, transparency, and sustainability of the PPP projects in these areas. Moreover, the paper examines the impacts of these legal and regulatory environments on the attraction of the private investment, especially given the prevailing issues of corruption and political instability, and how such environments enhance the realization of the sustainable development goals. One of the main arguments is that a solid legal framework is essential to provide a favorable environment in which the private sector can play its role in the development of infrastructure, minimizing risk, and improving fairness of results across the board. This comparative study will analyze the best practices and key areas of reform of PPP legislation with the capacity to address the management of stakeholders and environmental protection in infrastructure projects. The discussion also explores the situation on the one hand (developing economies) that tends to have weak regulatory frameworks, market volatility, and poor institutional capacity compared to developed nations (stable legal framework, the use of a sophisticated financial instruments to determine PPPs). This disparity often necessitates tailored legal and regulatory approaches in developing countries to attract and secure private sector involvement in critical infrastructure projects, especially given the global infrastructure deficit estimated at US$800 billion to US$1 trillion annually